Update copyrite year
Update copyrite year

pimusicbox/mopidy-musicbox-webclient,pimusicbox/mopidy-musicbox-webclient,pimusicbox/mopidy-musicbox-webclient,wagamama/Mopidy-MusicBox-Webclient,woutervanwijk/Mopidy-MusicBox-Webclient,woutervanwijk/Mopidy-MusicBox-Webclient,wagamama/Mopidy-MusicBox-Webclient,woutervanwijk/Mopidy-MusicBox-Webclient,wagamama/Mopidy-MusicBox-Webclient